BCHM 3114 Lecture Notes - Lecture 8: Anomer, Ketose, Aldose
Document Summary
Bchm 3114 learning goals: carbohydrates: give the straight-chain structure of c6 carbohydrate (aldose or ketose), indicate the atoms that are involved in formation of the cyclic (hemiacetal or hemiketal) structures. Aldose is a sugar with an aldehyde as the carbonyl group while ketose has a ketone group as a carbonyl. Carbon 5 and carbon 1 is involved in the formation of the cyclic structure: explain why they cyclic forms of carbohydrates consist of two anomers. The hydroxyl group that is attached to the carbon may either point up or down. In a anomers the hydroxyl group lies on the opposite side of the ring form the ch2oh while the beta anomer, the hydroxyl group lies on the same side of the ring as the ch2oh group. In glucose molecules 64% are beta anomers while 36% are alpha anomers: draw the structures of the alpha anomers of glucose and fructose.
